6 replies to this topic

[sdp727]

I saw a pear shaped last nite for a good price and it looked very nice but the GIA certificate indicated it has a strong blue florescence. It is an E colored 2.01 carat Vs1 and. Should I stay away?

[denverappraiser]

I have no great problem with fluorescence in the vast majority of the cases and it does tend to drive down the prices when compared to other similar stones without it so that makes it a good thing. It does make resale more difficult but resale but if resale is your issue I would stay away from diamonds in genera.

Neil

[jan]

It's not a problem unless it makes the stone look greasy or oily and hazy. Sometimes you can get a great price on a strong blue as well.

[Emma Parker & Co.]

I have to echo the other two posts...I also have no problem with fluorescence...in fact one of the most stunning stones I have ever worked with was a .56 D IF Ideal H&A with Strong Blue....it was not oily or hazy and the diamond was incredible.

Good luck!

Tim A.
Emma Parker & Co.
www.emmaparkerdiamonds.com

[Mikeyman]

i agree with ema

[diamondsbylauren]

We happen to have an E/SI2 Emerald Cut to which GIA gave strong blue fluorescence.

This is a stone with a non detrimental fluorescence- rather than being dull ( which is possible in a small percentage of strong blue stones) it actually shows a little blue.
I can see it in the photo below..


Back in the '70's ( 1970's thank you) I was working grading diamonds for Harry Winston. At that time, before GIA reports were prevalent, stones with this type of Fluorescence were called "Premier" and actually were priced higher due to the color.

[barry]

Nothing to be concerned about, a non-factor.

Read the best study ever done on the effects of fluorescence on a diamonds face up transparency:

http://www.gia.edu/p...7_fluoresce.pdf